DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES - Summary of Derivative Financial Instruments (Details) - Mortgages - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Other Assets
Derivative [Line Items]
Derivative, notional amount	$ 81,833	$ 117,649
Derivative, fair value	2,537	2,888
Other Liabilities
Derivative [Line Items]
Derivative, notional amount	163,189	126,750
Derivative, fair value	1,276	67
Forward contracts related to mortgage loans held for sale
Derivative [Line Items]
Derivative, notional amount	163,200	158,300
Forward contracts related to mortgage loans held for sale \| Other Assets
Derivative [Line Items]
Derivative, notional amount	0	31,500
Derivative, fair value	0	55
Forward contracts related to mortgage loans held for sale \| Other Liabilities
Derivative [Line Items]
Derivative, notional amount	163,189	126,750
Derivative, fair value	1,276	67
Interest rate lock commitments \| Other Assets
Derivative [Line Items]
Derivative, notional amount	81,833	86,149
Derivative, fair value	$ 2,537	$ 2,833

Aggregate notional amount specified by the derivative(s). Expressed as an absolute value.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Article 12
-Section 13
-Sentence Column B

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- Definition

Fair values as of the balance sheet date of the net amount of all assets and liabilities resulting from contracts that meet the criteria of being accounted for as derivative instruments.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 45
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=6945355&loc=d3e41228-113958

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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